Let P be a pyramid on a triangular base and Q be a cube .If x, y, z denotes number of edges, number of faces and number of vertices respectively for both P and
Q.1. Write the values of x , y , z for P.
Q2. Write the values of x , y , z for
Q.3. The result y = x + z is true for a) Only P b) only Q c) both P and Q d) neither P nor
Q 4. One child writes Euler formula as x + y = 2 + z. Check whether he is right, if not give the correct formula.
Q5. What figure is formed if only height of cube is increased or decreased?
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Step-by-step explanation:
Cube
No. of edges=12
No. of faces=6
No. of vertices=8
→Cuboid
No. of edges=12
No. of faces=6
No. of vertices=8
→Cone
No. of edges=0
No. of faces=1
No. of vertices=0
→Cylinder
No. of edges=0
No. of faces=2
No. of vertices=0
→Sphere
No. of edges=0
No. of faces=0
No. of vertices=0
→Triangular pyramid
No. of edges=6
No. of faces=4
No. of vertices=4
→Rectangular prism
No. of edges=9
No. of faces=5
No. of vertices=6
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